Goodwill and Intangible Assets - Gross Amount, Accumulated Amortization and Estimated Amortization (Details) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Mar. 28, 2021 |
Sep. 27, 2020 |
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| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Amount | $ 85,229 | $ 106,421 |
| Accumulated Amortization | (76,306) | (92,478) |
| Estimated amortization expense | ||
| 2021 | 3,547 | |
| 2022 | 2,814 | |
| 2023 | 1,972 | |
| 2024 | 590 | |
| Total | $ 8,923 | 13,943 |
| Client relations | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Weighted- Average Remaining Life (in Years) | 2 years 7 months 6 days | |
| Gross Amount | $ 47,515 | 60,775 |
| Accumulated Amortization | $ (41,533) | (53,392) |
| Backlog | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Weighted- Average Remaining Life (in Years) | 6 months | |
| Gross Amount | $ 30,509 | 37,682 |
| Accumulated Amortization | $ (28,778) | (32,761) |
| Trade names | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Weighted- Average Remaining Life (in Years) | 1 year 8 months 12 days | |
| Gross Amount | $ 7,205 | 7,964 |
| Accumulated Amortization | $ (5,995) | $ (6,325) |
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year. No definition available.
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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